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Product · modelcontextprotocol

registry

5 known vulnerabilities.

registry at a glance

Last 12 months
5
Critical · all time
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All Critical High Medium Low Exploited only Public exploit

5 results · Feed

  • Low 2.1
    CVE-2026-44428

    MCP Registry: GitHub OIDC tokens replayable across registry deployments due to shared audience

    The MCP Registry provides MCP clients with a list of MCP servers, like an app store for MCP servers. Prior to 1.7.6, the client-side and server-side GitHub OIDC flow is bound only to a global audience string, not to the specific registry instance being target…

    modelcontextprotocol registry github.com/modelcontextprotocol/registry Go
  • None 0.0
    CVE-2026-44427

    MCP Registry: Open Redirect

    The MCP Registry provides MCP clients with a list of MCP servers, like an app store for MCP servers. From 1.1.0 to 1.7.4, the TrailingSlashMiddleware in internal/api/server.go is vulnerable to an open redirect attack. An attacker can craft a URL with a protoc…

    modelcontextprotocol registry github.com/modelcontextprotocol/registry Go
  • Medium 5.1
    CVE-2026-44429

    MCP Registry: Stored XSS in catalogue UI via attribute-quote breakout in publisher-controlled `websiteUrl`

    The MCP Registry provides MCP clients with a list of MCP servers, like an app store for MCP servers. Prior to 1.7.7, the public catalogue UI served at GET / (file internal/api/handlers/v0/ui_index.html) is vulnerable to stored cross-site scripting via the ser…

    modelcontextprotocol registry github.com/modelcontextprotocol/registry Go
  • Medium 6.3
    CVE-2026-44430

    MCP Registry: Unauthenticated SSRF: HTTP namespace verification dials 6to4 / NAT64 / site-local IPv6 addresses, bypassing private-address allowlist

    The MCP Registry provides MCP clients with a list of MCP servers, like an app store for MCP servers. Prior to 1.7.7, the Registry's HTTP-based namespace verification (POST /v0/auth/http, POST /v0.1/auth/http) uses safeDialContext (internal/api/handlers/v0/aut…

    modelcontextprotocol registry github.com/modelcontextprotocol/registry Go
  • Low 3.5
    CVE-2026-45781

    MCP Registry: OCI ownership validation fails open on upstream rate limits, allowing attacker-controlled package claims

    The MCP Registry provides MCP clients with a list of MCP servers, like an app store for MCP servers. Prior to 1.7.9, OCI ownership validation skips label-match check when upstream OCI registry returns HTTP 429, letting any authenticated publisher bind their i…

    modelcontextprotocol registry github.com/modelcontextprotocol/registry Go